Similar words to "車両" and their differences

車両
A train car.
「乗ってる？何番目の車両いる？」
列車
A train.
Basically, it means a passenger train like a subway in cities.
「ホームに列車が到着しますのでご注意下さい♪」
電車
An electric train. This is often used in conversation when you ask how they come.
A「今日何で来る？」
B「電車。途中まで地下鉄で、あとJRだね。」